Faiveley Transport Amiens

Amsted Rail Company, Inc.

Mickael Marechal

Claudino Goncalves

Roberto Correndo

Daniel Brushwood

Jérémie Sales

Gilbert Le Gall

Louis Maillard

Daniel Goujon

Patrick Adams

Valves for maintaining brake cylinder pressure in freight car brake equipment are provided. A valve includes a first diaphragm defining a first side and a second side, and a second diaphragm defining a first side and a second side. The valve further includes a first port for receiving pressure from one of an emergency reservoir or a control volume, the first port in fluid communication with the first side of the first diaphragm; a second port for receiving pressure from a brake pipe, the second port in fluid communication with the second side of the first diaphragm; and a third port for receiving pressure from a brake cylinder, the third port in fluid communication with the second side of the second diaphragm.

Brake cylinder pressure maintenance valves for freight car brake equipment

A pneumatic brake valve unit for a rail vehicle, includes: a main device () designed for selective control of a communication path between a brake pipe connector () and either an atmospheric exhaust line () or an auxiliary reservoir connector (), such that the pressure at the brake pipe connector () is k times the difference between the pressure at a control reservoir connector () and the pressure at a main brake pipe connector (), k being a proportionality factor; and a reset device () designed for selective control of a communication path between an air discharge member () and the control reservoir connector () between an open position when the pressure at the brake pipe connector () is atmospheric pressure and a closed position when the pressure at the brake pipe connector () is above atmospheric pressure.

Pneumatic brake distributor valve assembly for a rail vehicle

A pneumatic brake valve unit for a rail vehicle, includes: a main device () that selectively controls a communication path between a brake pipe connector () and either an atmospheric exhaust line () or an auxiliary reservoir connector (), such that the pressure at the brake pipe connector () is k times the difference between the pressure at a control reservoir connector () and the pressure at a main brake pipe connector (), k being a proportionality factor; a cut-off valve () that controls a communication path between the main brake pipe connector () and the control reservoir connector (); an accelerator device () that controls a communication path between the main brake pipe connector () and an air discharge member (); and a driving pilot () which is common to both the valve () and the accelerator device () and which controls their respective communication paths.

Growing community of inventors

Hem Hardinval, France

Mickael Marechal